Chromatograph exhaust vent back pressure diffuser



FIG. 1 is a top perspective view of the ornamental chromatograph exhaust vent back pressure diffuser design of the invention.

FIG. 2 is a bottom perspective view of the ornamental chromatograph exhaust vent back pressure diffuser design of FIG. 1.

FIG. 3 is a front view of the ornamental chromatograph exhaust vent back pressure diffuser design of FIG. 1.

FIG. 4 is a back view of the ornamental chromatograph exhaust vent back pressure diffuser design of FIG. 1.

FIG. 5 is a first side view of the ornamental chromatograph exhaust vent back pressure diffuser design of FIG. 1.

FIG. 6 is a second side view of the ornamental chromatograph exhaust vent back pressure diffuser of FIG. 1.

FIG. 7 is a top view of the ornamental chromatograph exhaust vent back pressure diffuser design of FIG. 1; and,

FIG. 8 is a bottom view of the ornamental chromatograph exhaust vent back pressure diffuser design of FIG. 1. 

CLAIM The ornamental design for a chromatograph exhaust vent back pressure diffuser, as shown and described. 